I've spent a fair amount on facebook ads. The "problem" with them is that you can't send them to links outside facebook or it's just a waste of money. Drive them to "like" your page and then you can hopefully get a dialog going with them. However, it's a big question mark, meaning you hope at some people convert to customers at some point but it doesn't happen quickly so it's hard to get an ROI calculation on it.
Servicevines is an outdoor marketplace where Pro's and customers meet and fall in love.